| Family | Geseneriaceae |
| Scientific name | Titanotrichum oldhamii (Hemsley) Solereder |
| Synonyms | Matsumuria oldhami (Hemsley) Hemsley; Rehmannia oldhamii Hemsley |
| Common name | (Japanese common name) matsumura-sou (マツムラソウ, 松村草 [meaning: Mr. Matsumura's weed]) |
| (English common name) none | |
| Distribution | (Japan) Okinawa (Ishigaki Island, Iriomote Island) |
| (Other nations) China, Taiwan | |
| Habitat | Mountane streamside |
| Chromosomal number | 2n=40 |
| Description | Plants 15-70cm tall. Leaves 5-20cm long, 2-8cm wide. Flowers yellow (inside red) corollas 3.5cm long, 1.2cm wide, flowering in July to October. Perennial plants. |
| Reference | Titanotrichum oldhamii (Hemsl.) Soler. |
| Titanotrichum oldhamii (Hemsley) Solereder | |
| Population Genetic Structure of Titanotrichum oldhamii (Gesneriaceae), a Subtropical Bulbiliferous Plant with Mixed Sexual and Asexual Reproduction | |
| Phylogenetic Position of Titanotrichum oldhamii (Gesneriaceae) Inferred From Four Different Gene Regions | |
| Note | Rare species. |
| September 2009 at my home |
September 2009 at my home |
September 2009 at my home |
| September 2009 at Tsukuba Botanical Garden |
September 2009 at Tsukuba Botanical Garden |